Magic Sonic ViewFinder is a powerful tool designed to provide filmmakers with a precise framing preview for their real camera and lens combination. This iPhone app simulates the field of view of digital cameras, making it an invaluable tool during preproduction.

With Magic Sonic ViewFinder, you can select your camera from a menu and rotate the wheel to choose the focal length of the lens. The app supports a wide range of Sony cameras, including the Alpha series, FS series, and RX100. It also offers the ability to simulate using tele adapters or anamorphic optics on your camera. Additionally, you can select the aspect ratio of the frame guide overlaying your image.

One of the standout features of Magic Sonic ViewFinder is the ability to apply commonly used color presets, also known as LUTs, to the live picture. This feature allows filmmakers to get even closer to the final shot and visualize the desired look and feel of their film.

Furthermore, the app allows you to save your preferred view for future reference, including data such as the focal length, date and time, and camera/lens information. While taking a photo, you have the option to lock exposure and control the auto focus to ensure you capture the perfect shot.

It's worth noting that Magic Sonic ViewFinder is not an external monitor for your Apple device but operates as a standalone director's viewfinder. The app does contain ad banners, but these can be turned off with an additional in-app purchase.

In conclusion, Magic Sonic ViewFinder is an essential tool for filmmakers, providing them with a precise framing preview and a range of useful features to enhance their preproduction process. Whether you're a professional or an aspiring filmmaker, this app is a valuable addition to your toolkit.